use monotonic time source in convar->timed_wait, and in the scheduler using it

src/libstrongswan/utils/mutex.c

@@ -47,7 +47,7 @@ struct lock_profile_t {
 	/**
 	 * how long threads have waited for the lock in this mutex so far
 	 */
-	struct timeval waited;
+	timeval_t waited;
 	
 	/**
 	 * backtrace where mutex has been created
@@ -81,10 +81,10 @@ static void profiler_init(lock_profile_t *profile)
 
 #define profiler_start(profile) { \
 	struct timeval _start, _end, _diff; \
-	gettimeofday(&_start, NULL);
+	time_monotonic(&_start);
 	
 #define profiler_end(profile) \
-	gettimeofday(&_end, NULL); \
+	time_monotonic(&_end); \
 	timersub(&_end, &_start, &_diff); \
 	timeradd(&(profile)->waited, &_diff, &(profile)->waited); }
 
@@ -368,7 +368,7 @@ static bool timed_wait(private_condvar_t *this, private_mutex_t *mutex,
 	timeval_t tv;
 	u_int s, ms;
 	
-	gettimeofday(&tv, NULL);
+	time_monotonic(&tv);
 	
 	s = timeout / 1000;
 	ms = timeout % 1000;
@@ -419,17 +419,23 @@ condvar_t *condvar_create(condvar_type_t type)
 		case CONDVAR_TYPE_DEFAULT:
 		default:
 		{
+			pthread_condattr_t condattr;
 			private_condvar_t *this = malloc_thing(private_condvar_t);
-		
+			
 			this->public.wait = (void(*)(condvar_t*, mutex_t *mutex))_wait;
 			this->public.timed_wait = (bool(*)(condvar_t*, mutex_t *mutex, u_int timeout))timed_wait;
 			this->public.timed_wait_abs = (bool(*)(condvar_t*, mutex_t *mutex, timeval_t time))timed_wait_abs;
 			this->public.signal = (void(*)(condvar_t*))_signal;
 			this->public.broadcast = (void(*)(condvar_t*))broadcast;
 			this->public.destroy = (void(*)(condvar_t*))condvar_destroy;
-		
-			pthread_cond_init(&this->condvar, NULL);
-		
+			
+			pthread_condattr_init(&condattr);
+#ifdef HAVE_CONDATTR_CLOCK_MONOTONIC
+			pthread_condattr_setclock(&condattr, CLOCK_MONOTONIC);
+#endif
+			pthread_cond_init(&this->condvar, &condattr);
+			pthread_condattr_destroy(&condattr);
+			
 			return &this->public;
 		}
 	}

src/libstrongswan/utils/mutex.h

@@ -98,11 +98,11 @@ struct mutex_t {
 	 * Release the lock on the mutex.
 	 */
 	void (*unlock)(mutex_t *this);
-			
+	
 	/**
-     * Destroy a mutex instance.
-     */
-    void (*destroy)(mutex_t *this);
+	 * Destroy a mutex instance.
+	 */
+	void (*destroy)(mutex_t *this);
 };
 
 /**
@@ -128,12 +128,15 @@ struct condvar_t {
 	
 	/**
 	 * Wait on a condvar until it gets signalized, or times out.
-	 * 
+	 *
+	 * The passed timeval should be calculated based on the time_monotonic()
+	 * function.
+	 *
 	 * @param mutex			mutex to release while waiting
-	 * @param time			absolute time until timeout
+	 * @param tv			absolute time until timeout
 	 * @return				TRUE if timed out, FALSE otherwise
 	 */
-	bool (*timed_wait_abs)(condvar_t *this, mutex_t *mutex, timeval_t timeout);
+	bool (*timed_wait_abs)(condvar_t *this, mutex_t *mutex, timeval_t tv);
 	
 	/**
 	 * Wake up a single thread in a condvar.